Control panel shows E3; freezer may not respond to temperature adjustments or may shut down intermittently.

Safety: Disconnect power before removing the control panel or touching internal wiring.

Try a simple reset first:

• Unplug the freezer for 10 minutes.
• Wipe the control panel surface dry and ensure no condensation or spills are present.
• Plug back in and check if E3 clears.

If E3 persists:

• Access the control panel: Remove the screws securing the top/front control housing. Carefully pull the panel forward.
• Inspect the keypad ribbon cable: Ensure the flat cable is fully seated in the connector on the main control board. Reseat it by gently removing and reinserting.
• Check for corrosion or moisture: Look for green/white corrosion on connectors or visible water damage. Dry the area thoroughly and clean light corrosion with isopropyl alcohol and a soft brush.
• Test button function: With power restored (use caution), press each button and see if the display responds correctly. If some buttons are unresponsive or trigger random actions, the keypad is faulty.
• Replace the user interface: If the keypad is defective, replace the entire control panel/user interface assembly with an Igloo-compatible part. Transfer any mounting brackets or light lenses as needed.

When to seek service: If a new keypad does not resolve E3, the main control board may be defective and should be replaced by a qualified technician.